Explain why the policy of treating the Great Plains as a huge reservation changed

(202 bc - 220 ad) dynasty started by lui bang; a great and long-lasting rule, it discarded the harsh policies of the qin dynasty and adopted confucian principles; han rulers chose officials who passed the civil service exams rather than birth; it was a time of prosperity

c) troops march forward in close formation against newer, more accurate weapons

b. they tried to evict the squatters from the area.

so sorry if wrong